Box plot overlaid with dot/line plot

[Bryony Simmons]

Hi,

I want to produce a box plot (over two categories) & add or overlay a plot with another meaningful value (eg, a box plot of the median/IQR product prices by country and category overlaid with the total volume of sales).

I am having some difficulties overlaying the two plots. I see that you cannot use addplot with box plots (or use twoway). I have looked at other answers which suggest using stripplot (SSC) but I cannot seem to apply it correctly. I am using Stata 14.2.

I have used an example dataset to try to describe my problem:

// using
sysuse auto, clear
gen group = mpg<20

// run boxplot
graph hbox price [aw=weight],    ///
    noout asy                     ///
    over(group)                 ///
    over(rep78)

// run dotplot
graph dot (sum) weight,        ///
    over(group)                ///
    over(rep78)

These are similar to the two graphs I want to draw with my data - but I can't work out how to overlay them. Do you have any advice on how to approach this? The second plot does not have to be a dot plot - it could be a line/connected graph for example.

I really appreciate any help on this,
Bryony

[Nick Cox]

I can’t imagine how this graph would make any sense overlaid. I suggest using graph combine.